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图分类号:O647.3 文献标志码:A 文章编号:1672-7207(2010)02-0416-06 Removal performance of arsenic by carbon...) Abstract: The removal efficiencies of arsenic from solution by ionic liquids loaded carbon nanotubes (ILs/CNT) composite adsorption material was investigated by static and dynamic adsorption......
Trans. Nonferrous Met. Soc. China 29(2019) 2213-2221 Selective removal of As from arsenic-bearing dust rich in Pb and Sb Xue-yi GUO1,2, Lei ZHANG1,2, Qing-hua TIAN1,2, Da-wei YU1,2, Jing SHI1,2, Yu..., Changsha 410083, China Received 20 December 2018; accepted 1 July 2019 Abstract: The selective removal of arsenic from arsenic-bearing dust containing Pb and Sb in alkaline solution was studied......
abandoned mines and processed waste tailings in the generation of acid mine drainage and toxic metal dissolution was discussed. Mechanisms of acid formation and dissolution of copper, zinc, iron and arsenic... the above mine sites could be used to precipitate dissolved metals such as copper, zinc, iron and arsenic. Arsenic bioremediation was demonstrated through the use of native microorganisms such Thiomonas spp......
Purification and enzymatic properties of arsenic resistance protein ArsH from heterogeneous expression in E.coli BL21 WU Xue-ling(吴学玲)1, 2, MIAO Bo(苗 博) 1, 2, HAN Jian(韩 剑) 1, 2, HU Qi(胡 琪) 1, 2... of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China Received 8 September 2009; accepted 22 March 2010 Abstract: Four arsenic-resistance genes (arsB, arsC, arsH......
Co-oxidation of arsenic(Ⅲ) and iron(Ⅱ) ions by pressurized oxygen in acidic solutionsKe-zhou Song,Ping-chao Ke,Zhi-yong Liu,Zhi-hong LiuSchool of Metallurgy and Environment, Central South University摘 要:The co-oxidation of As(Ⅲ) and Fe(Ⅱ) in acidic solutions by pressured oxygen was studied under an oxygen pressure between 0.5 and2.0 MPa at a temperature......
As(Ⅲ) concentration on arsenic removal rate by compound salt 由图1可知,当初始As(Ⅲ)浓度由0.05 g/L增加到9.76 g/L时,砷脱除率由95.98%上升到99.87%.在初始As(Ⅲ)浓度为0.05 g/L时,脱除率与其他组相比偏低,可见复合盐脱砷在低As(Ⅲ)浓度下脱砷效果相对较差,溶液中As(Ⅲ)初始浓度为0.99~9.76 g/L时,复合盐脱砷效果均比较好,砷脱除率都大于99%,砷残留浓度均低于14 mg/L.对处理后滤液中复合盐残留浓度进行测定,结果如表2所示. 表2 脱砷后液中复合盐残留浓度 Table 2 Compound salt residual concentration in arsenic removal solution 由表2可知,溶液中复合盐各组分浓度随初始As(Ⅲ)浓度的增大而增大,溶液中......
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硝酸银光度法测定工业硫酸锌中痕量砷江秋月1(1.广东省韶关市广东韶关冶炼厂)摘 要:以聚乙烯醇为介质,硝酸银为显色剂,在乙醇体系中,采用分光光度法测定了工业硫酸锌中痕量砷.在1.8~3.6mol/L酸度下,硫酸锌中砷被锌粒还原成砷化氢气体逸出,用硝酸银-聚乙烯醇-乙醇溶液作为砷化氢的吸收剂,砷化氢将硝酸银还原成单质胶态银,在聚乙烯醇的作用下显黄色,其最大吸收峰位于400nm波长处,表观摩尔吸光系数为2.2×105 L·mol-1·cm-1,砷的质量浓度在0~0.6mg/L范围内符合比尔定律.方法用于工业硫酸锌样......
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